Mass. Gen. Laws ch. 85, § 29

Such draw tender may remove a vessel which obstructs such draw, or interferes with the passage of other vessels through the same, or is made fast, without his consent, to such draw or bridge or to a pier or wharf connected therewith, or the persons in charge of which wilfully violate any such ordinance or by-law; and the expense of such removal may be recovered by the commonwealth, county, city or town.